Issue Description:
Consider the case

modify ($fact) {
  setValue1(2)
}
$fact.setValue2(2);

and

$fact.setValue1(2);
update($fact);
$fact.setValue2(2);

value2 should be enlisted as property reactivity?

There is inconsistency among the combinations:

• non-exec-model and exec-model
• java dialect and mvel dialect
• modify and update

Acceptance Criteria:

See discussion in https://github.com/kiegroup/drools/pull/5380

• Analyze whole RHS and make them all property reactive. In the above example, value2 should be enlisted as property reactivity
• Consistent among the configurations
• Add docs